A colossal oceanic beast dubbed "Dragonsaurus" suddenly surfaced, frightening the deep seas. Great Mazinger, Grendizer and Getter Robo G unite to confront this fresh menace across the waters. Yet their mission grows tougher when Dragonsaurus engulfs Boss Borot and advances toward Tokyo, threatening the city"s safety in the heart of Japan"s bustling capital.
Toei Animation Japan